F25J 3/04054
Of air
Official title: {of air}
F25J3/04054 (Of air) appears on 66 US grants and 83 published applications in this corpus.
Search patents in F25J- Granted patents
- 66
- Published applications
- 83
- Assignees
- 29
- Inventors
- 100
- Latest grant
- 18 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 2 | 0 |
| 1993 | 0 | 0 |
| 1994 | 1 | 0 |
| 1995 | 2 | 0 |
| 1996 | 0 | 0 |
| 1997 | 1 | 0 |
| 1998 | 1 | 0 |
| 1999 | 4 | 0 |
| 2000 | 2 | 0 |
| 2001 | 4 | 0 |
| 2002 | 1 | 2 |
| 2003 | 3 | 1 |
| 2004 | 1 | 2 |
| 2005 | 2 | 2 |
| 2006 | 1 | 3 |
| 2007 | 2 | 4 |
| 2008 | 2 | 1 |
| 2009 | 0 | 4 |
| 2010 | 0 | 1 |
| 2011 | 0 | 6 |
| 2012 | 0 | 5 |
| 2013 | 2 | 3 |
| 2014 | 1 | 6 |
| 2015 | 4 | 2 |
| 2016 | 1 | 8 |
| 2017 | 1 | 5 |
| 2018 | 4 | 2 |
| 2019 | 3 | 5 |
| 2020 | 2 | 4 |
| 2021 | 5 | 5 |
| 2022 | 0 | 4 |
| 2023 | 3 | 2 |
| 2024 | 4 | 4 |
| 2025 | 2 | 1 |
| 2026 | 1 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Method and plant for low temperature fractionation of air18 Aug 2026US 12,710,228 B2Linde Aktiengesellschaft
- Air separation unit and method for cryogenic separation of air using a distillation column system including an intermediate pressure kettle column8 Jul 2025US 12,352,496 B2Praxair Technology, Inc.
- Method for obtaining one or more air products, and air separation unit14 Jan 2025US 12,196,488 B2Linde Aktiengesellschaft
- Apparatus and method for separation of air by cryogenic distillation31 Dec 2024US 12,181,217 B2L Air Liquide, Societe Anonyme Pour L'Etude et L'Exploitation des Procedes Georges Claude
- Method for starting up a cryogenic air separation unit and associated air separation unit13 Aug 2024US 12,061,045 B2L' Air Liquide, Societe Anonyme pour I' Etude et I'Exploitation des Procedes Georges Claude
- Process and apparatus for purifying air and cryogenic air separation process and plant20 Aug 2026US 2026/0243508 A1
- High-purity oxygen production method, and air separation device for producing high-purity oxygen12 Jun 2025US 2025/0189218 A1L Air Liquide, Societe Anonyme Pour L'Etude et L'Exploitation des Procedes Georges Claude
- Method for the cryogenic separation of air, and air separation plant28 Nov 2024US 2024/0393042 A1Linde Aktiengesellschaft
- Method and plant for providing a pressurized oxygen-rich, gaseous air product21 Nov 2024US 2024/0384928 A1Linde Aktiengesellschaft
- Method and plant for low temperature fractionation of air6 Jun 2024US 2024/0183610 A1Linde Aktiengesellschaft
Most cited
By later US patents
- Liquefied natural gas refrigeration transfer to a cryogenics air separation unit using high presure nitrogen stream67US 5,137,558 AAir Products and Chemicals, Inc. · 1992
- Efficient process to produce oxygen48US 5,966,967 AAir Products and Chemicals, Inc. · 1999
- Process and installation for production of high pressure gaseous fluid38US 5,475,980 AL'Air Liquide, Societe Anonyme pour l'Etude l'Exploitation des Procedes Georges Claude · 1995
- Internally heat pumped single pressure distillative separations23US 4,357,153 A1982
- Gas separation process with single distillation column23US 4,707,994 AAir Products and Chemicals, Inc. · 1987